-- Test script for property change notification mechanism. function format_property_val(v) if type(v) == "table" then return mp.format_table(v) -- undocumented function; might be removed else return tostring(v) end end for i,name in ipairs(mp.get_property_native("property-list")) do mp.observe_property(name, "native", function(name, val) print("property '" .. name .. "' changed to '" .. format_property_val(val) .. "'") end) end